<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <link rel="stylesheet" href="../../btclass/bootstrap/css/anniu.css"/>
</head>
<body>
<!--第一排，白色-->
<div>

        <button class="white bigger ">Large button</button>

        <button class="white mid">Default button</button>

        <button class="white small" >Small button</button>

        <button class="white mini" >Mini button</button>



</div>

<!--第二排,黑色-->
<div>

    <button class="black bigger">Large button</button>

    <button class="black mid">Default button</button>

    <button class="black small" >Small button</button>

    <button class="black mini" >Mini button</button>



</div>


<!--第三排-->
<div>

    <button class="wh bigger">Large button</button>

    <button class="wh mid">Default button</button>

    <button class="wh small" >Small button</button>

    <button class="wh mini" >Mini button</button>


</div>

<!--第四排-->

<div>

    <button class="it bigger alive">Large button</button>

    <button class="it mid alive">Default button</button>

    <button class="it small alive" >Small button</button>

    <button class="it mini alive" >Mini button</button>

</div>

<div style="margin: auto">
    <button class="btn btn-w">
     hahaha
    </button>
</div>




</body>
</html>